* {
  margin: 0;
  padding: 0;
}
ul {
  list-style: none;
  display: flex;
  position: fixed;
  bottom: 0px;
  left: 0px;
  height: 50px;
  line-height: 50px;
  width: 100%;
  background: white;
}

ul li {
  flex: 1;
  text-align: center;
}
.active {
  color: red;
}

dl {
  height: 50px;
  border-bottom: 1px solid gray;
}

dl dt {
  font-size: 20px;
}

dl dd {
  font-size: 12px;
  color: gray;
}

input {
  width: 100%;
  height: 50px;
  line-height: 50px;
  font-size: 30px;
}
